Design your kit home with shed designer.

What is a kit home?

A kit home is a steel-framed habitable building designed and engineered as a single package, manufactured offsite, then delivered to your block as a pre-cut shell ready to erect. In Australia, a kit home is a Class 1a structure under the National Construction Code, which means it is engineered as a permanent dwelling, not a Class 10a shed (Australian Building Codes Board, NCC building classifications).

ShedDesigner's kit home templates are built from 100% Australian-made BlueScope steel and engineered to AS/NZS 1170.2 wind loading or AS 4055 housing wind, depending on your wind class. Pick the closest template, set your floor plan, roof profile, cladding and BAL rating, then submit your design once for free comparable quotes from ShedSafe accredited dealers in your region.

Class 1a versus Class 10a, and why it matters

The single most expensive mistake first-time kit home buyers make is treating a kit home like a shed. It is not. Class 1a (habitable) and Class 10a (non-habitable shed) carry different engineering, slab and energy-rating requirements (Australian Building Codes Board).

• Class 10a (sheds, garages, carports): designed for occasional occupancy. Lighter slab, lighter footings, no NatHERS energy rating.
• Class 1a (kit homes, granny flats, shouses with full habitation): engineered as a residence. Heavier footings, residential slab spec, full NatHERS energy rating, full smoke alarm and ventilation compliance.

If your build is meant to be lived in, it has to be Class 1a from the start. Trying to convert a Class 10a shed into habitable space later is rarely cheap and rarely council-approved without a full upgrade.

For the barn-shaped liveable build, see also our barndominiums product page or the broader shed homes category.

Energy, wind and bushfire compliance

Three regulatory numbers any 2026 kit home needs to clear.

NatHERS 7-star energy rating. The National Construction Code 2022 mandates a 7-star NatHERS rating plus a Whole-of-Home rating of 60 out of 100 for new Class 1 dwellings, settings carried forward unchanged in NCC 2025. Adoption rolled out across the states between October 2023 and May 2025, and is now nationwide (NatHERS, Whole-of-Home rating, energy.gov.au). Hitting 7 stars in a steel kit home typically means R5.0 to R6.0 ceiling insulation, R2.5 to R2.7 walls (or R3.0 to R4.0 in 140 mm studs), and a thermally efficient glazing package.

Wind class. Houses up to two storeys, 16 metres wide and 8.5 metres high are designed under AS 4055 wind classes N1 to N6 (non-cyclonic) and C1 to C4 (cyclonic). Above those limits, the build is engineered to AS/NZS 1170.2 directly (STA Consulting). Most kit homes in inland Australia sit in N2 or N3. Cyclonic-zone homes need C-class engineering and heavier tie-downs.

BAL bushfire rating. AS 3959 sets six bushfire attack levels: BAL-LOW, BAL-12.5, BAL-19, BAL-29, BAL-40 and BAL-FZ (flame zone). Steel kit homes can be specified up to BAL-FZ with the right cladding (non-combustible fibre cement, brick veneer or concrete masonry), fire-rated double glazing or shutters, and ember-mesh detailing (Bushfire Design Consultants, AS 3959 BAL ratings). Confirm your BAL with a bushfire assessor before locking the design.

Kit home finance: what the banks actually do

This is where most kit home buyers get stuck.

Big-4 banks (CBA, Westpac, NAB, ANZ) are reluctant to lend on kit homes because most kit suppliers require full upfront payment for the kit itself, which breaks the standard staged construction-loan progress-payment schedule (Home Loan Experts, Kit home loans; Hudson Financial Planning, 2025). The workarounds, in rough order of how often they get used:

1. Licensed builder + construction loan. If a licensed builder is engaged to erect the kit, lenders will treat the build like any other and offer up to 90% LVR on land plus build. 2. Kit suppliers that invoice in stages. A small number of suppliers (PAAL is the most-cited example) offer staged invoicing aligned to a construction loan, which keeps the big-4 in play. 3. 30 to 40% deposit on the kit. If the buyer can fund the kit upfront, a top-up loan against the land covers the on-site build. 4. Specialist lenders. Modular and kit-home lenders exist outside the big-4 and will lend on kit-only spec at slightly higher rates.

Owner-builder loans are largely unavailable from the majors. If you are owner-building, plan the finance before you order the kit.

Before you get quotes

A 2026 steel kit home shell sits between $2,600 and $3,000 per square metre, with a turnkey build typically running double that depending on fit-out (A-Frame Kit Homes 2026 pricing guide; Imagine Kit Homes). A 100 m² turnkey home lands roughly $260,000 to $400,000. The build runs 6 to 12 weeks for fabrication, 5 to 12 weeks on site, and roughly 6 months end-to-end including DA or CDC approvals.

100% Australian-made BlueScope Steel. Across structural framing and Colorbond® roofing, with the option of full Colorbond® cladding or alternative facings. COLORBOND® steel roofing on residential dwellings carries BlueScope warranties of up to 36 years against corrosion to perforation, depending on location; for non-habitable shed and garage applications the warranty runs up to 15 years (BlueScope, Warranty pages). Check your build on BlueScope's online warranty estimator.

ShedSafe accredited dealers, no exceptions. Every dealer on ShedDesigner is third-party assessed under the Australian Steel Institute programme.

One design, multiple quotes. Your kit home design goes out to dealers in your region. Every quote prices the same shell, to the same NCC class, the same wind class and the same BAL, so the quotes you get back are directly comparable.

Browse the broader range on our Shed Home Designs page.